Abstract:
A circuit board arrangement includes a first printed circuit board having a first edge connector and a second printed circuit board having a second edge connector. The first edge connector includes a plurality of fingers, with each finger having at least one first conductor pad. The second edge connector includes a plurality of openings positioned generally in line with each other and a plurality of second conductor pads. Each opening has a corresponding finger positioned therein. Each second conductor pad is positioned adjacent a corresponding opening and corresponding first conductor pad.
Abstract:
A circuit module includes a printed circuit board, which is vertically mounted on a system circuit board. The support structure includes a first supporting member and a second supporting member. The first supporting member is arranged on a first side of the printed circuit board and includes a first bottom surface lying flat on the system circuit board. The second supporting member is arranged on a second side of the printed circuit board and includes a second bottom surface lying flat on the system circuit board, wherein the second side is opposed to the first side. The first supporting member and the second supporting member cooperatively clamp a lower edge of the printed circuit board therebetween.
Abstract:
A board-mounting device (20) which includes a base carrier (10) that can be snapped down on a board (14). The base carrier (10) includes at least one locking hook (22) which engages behind the board (14) in the mounted condition of the device (20). The device (20) further includes a device carrier (11), connected with the base carrier (10), which is adapted to be moved relative to the base carrier (10). The locking hook (22) is provided with at least one shoulder (43) on which the device carrier (11) is supported by at least one guide pin (31, 40, 50, 60) before the device (20) is in its mounted condition.
Abstract:
A portable electronic apparatus comprises a frame having a recessed portion for receiving a battery. The recessed portion has a bottom portion that has an upper surface on which the battery seats. A circuit board is disposed beneath the frame and has two locking holes positioned at spaced-apart locations beneath a lower surface of the bottom portion. A negative battery terminal is disposed in an opening formed in the bottom portion. The negative battery terminal has two battery contact spring portions for elastically contacting a negative terminal of the battery and two locking spring portions that are sandwiched between the lower surface of the bottom portion and the circuit board. The two locking spring portions terminate in elastically deformable locking portions that are inserted into, and elastically deformed to make pressure contact with, inner walls of respective ones of the locking holes.
Abstract:
The formation of the retaining member 42 at the forming of the main board 40 so as to be able to be cut off and the cutting-off from the main board 40 after the board forming of the main board 40 causes the retaining member 42 to be separated in a letterpress shape from the main board 40. In addition, on the main board 40, the earphone plug socket 44 is mounted with the plug-in inlet 44b facing the outer periphery, the slit is formed and the projected part 43a of the retaining member 42 is fitted into the slit as well. Further, the fitting of the retaining member 42 into the slit 46 causes the side edge 43b thereof to abut on a groove 44a at the back surface of the earphone plug socket 44.
Abstract:
A light device includes a number of brackets disposed on a base board, and a number of light members engaged in the brackets respectively, for attaching to the base board. The light members are made of light emitting diodes and arranged in series, to generate a light of an increased brightness, and to have an increased working life. The light members will not generate a great heat such that the working life of the light members may further be increased. A control device may be coupled to the light members, to control and to operate the light members. A number of driving devices may be coupled to the light members and the control device, to control and to operate the light members to generate lights of different colors.
Abstract:
The invention relates to a method for fixing a miniaturized component, especially comprising a micro-optical element, to a pre-determined fixing section of a baseplate by means of a soldered joint. Said baseplate comprises an upper side and a lower side, and the component comprises a base surface. At least the fixing section of the baseplate is coated on the upper side by a metallic layer which is applied at least in the fixing section in a continuously plane manner and thus without interruptions. Solder material is applied at least to the fixing section coated with the metallic layer. In one step of the method, the component is arranged above the fixing section, the base surface of the component being positioned above the solder material in such a way that they do not touch, are vertically interspaced and form an intermediate region between each other. In another step, thermal energy is supplied, especially by means of a laser beam, in a region which is locally limited essentially to the fixing section, in order to melt the solder from the lower side of the baseplate, such that the intermediate region is filled by drop formation of the melted solder, fixing both sides.
Abstract:
To provide a highly stable crystal oscillator having increased thermal efficiency. The highly stable crystal oscillator comprises; a thermostat mainframe which maintains the temperature of a crystal resonator including a resonator container for sealing a crystal piece constant, an oscillating element which constitutes an oscillation circuit together with said crystal resonator, a temperature control element which controls the temperature inside of said thermostat mainframe, and a circuit board mounted with said thermostat mainframe, said oscillating element, and said temperature control element. The construction is such that a heat generating chip resistor and a highly heat sensitive element having a higher temperature dependency, among said oscillating element and said temperature control element, are arranged on one principal plane of said circuit board, and said heat generating chip resistor, said highly heat sensitive element, and said thermostat mainframe are directly heat bonded by a thermo-conductive material.
Abstract:
A circuit assembly comprises a plurality of electronic devices mounted on a circuit board, including a matched pair of devices intended for use together in the same circuit. In order to reduce the risk of using un-matched devices at the assembly stage the pair of matched devices are joined together prior to mounting them on the circuit board. For this purpose a simple bracket is disclosed into which the two devices can be inserted from opposite ends by push-fitting.
Abstract:
A battery holder is disclosed which is of one piece construction and which includes a housing having a base and a pair of spaced end walls. One of the end walls is longer than the other and defines a recess therein which is configured to receive one end of the battery when the battery is inserted in the housing. A resilient terminal contact is provided at both ends of the housing and the terminal contact at the end opposite the recess is configured in a manner such that as the battery is being inserted in the housing the terminal contact is biased toward its end of the housing, and when the battery has been inserted into the housing the resilient terminal contact moves into overlying relationship with its end of the battery to hold that end of the battery against removal from the housing. In addition, terminal tails are provided on the terminal contacts which are kinked across their width to retain the connector on a circuit board prior to soldering.